How to convert .tsv files directly to .mp4 format.
Converting Digital Receiver Video Recordings directly to MPEG-4 Video format (.tsv to .mp4 conversion) should be possible if your TSV file is not encrypted. You can use the VLC Media Player to not only playback unencrypted TSV files, but also to convert them into common multimedia formats, including MP4.
Alternatively, you may try the Aiseesoft Free Video Converter, which is also capable of converting .tsv to .mp4.
Encrypted Digital Receiver Video Recordings can only be played using the TV receiver that actually generated the TSV file.